The Quick Release Rotor Adapters for 1345s Quick Release Props from DJI are required by the 1345s Quick Release Props. The adapters screw onto the motor, where they permanently reside. They allow the props to be toollessly twisted on or off. The adapters work with the Inspire 1 motors as well as the motors for the E800 Tuned Propulsion System. A pair is included, one for a clockwise (CW) and one for a counterclockwise (CCW) motor.